一:無返回值的存儲(chǔ)過程
存儲(chǔ)過程為:
CREATE OR REPLACE PROCEDURE TESTA(PARA1 IN VARCHAR2,PARA2 IN VARCHAR2) AS
BEGIN
INSERT INTO HYQ.B_ID (I_ID,I_NAME) VALUES (PARA1, PARA2);
END TESTA;
然后呢,在java里調(diào)用時(shí)就用下面的代碼:
package com.hyq.src;
import java.sql.*;
import java.sql.ResultSet;
public class TestProcedureOne {
public TestProcedureOne() {
}
public static void main(String[] args ){
String driver = "oracle.jdbc.driver.OracleDriver";
String strUrl = "jdbc:oracle:thin:@127.0.0.1:1521: crm";
Statement stmt = null;
ResultSet rs = null;
Connection conn = null;
CallableStatement cstmt = null;
try {
Class.forName(driver);
conn = DriverManager.getConnection(strUrl, " crm", " crm");
CallableStatement proc = null;
proc = conn.prepareCall("{ call HYQ.TESTA(?,?) }");
proc.setString(1, "100");
proc.setString(2, "TestOne");
proc.execute();
}
catch (SQLException ex2) {
ex2.printStackTrace();
}
catch (Exception ex2) {
ex2.printStackTrace();
}
finally{
try {
if(rs != null){
rs.close();
if(stmt!=null){
stmt.close();
}
if(conn!=null){
conn.close();
}
}
}
catch (SQLException ex1) {
}
}
}
}
當(dāng)然了,這就先要求要建張表TESTTB,里面兩個(gè)字段(I_ID,I_NAME)。
二:有返回值的存儲(chǔ)過程(非列表)
存儲(chǔ)過程為:
CREATE OR REPLACE PROCEDURE TESTB(PARA1 IN VARCHAR2,PARA2 OUT VARCHAR2) AS
BEGIN
SELECT INTO PARA2 FROM TESTTB WHERE I_ID= PARA1;
END TESTB;
在java里調(diào)用時(shí)就用下面的代碼:
package com.hyq.src;
public class TestProcedureTWO {
public TestProcedureTWO() {
}
public static void main(String[] args ){
String driver = "oracle.jdbc.driver.OracleDriver";
String strUrl = "jdbc:oracle:thin:@127.0.0.1:1521:crm";
Statement stmt = null;
ResultSet rs = null;
Connection conn = null;
try {
Class.forName(driver);
conn = DriverManager.getConnection(strUrl, " crm", " crm");
CallableStatement proc = null;
proc = conn.prepareCall("{ call HYQ.TESTB(?,?) }");
proc.setString(1, "100");
proc.registerOutParameter(2, Types.VARCHAR);
proc.execute();
String testPrint = proc.getString(2);
System.out.println("=testPrint=is="+testPrint);
}
catch (SQLException ex2) {
ex2.printStackTrace();
}
catch (Exception ex2) {
ex2.printStackTrace();
}
finally{
try {
if(rs != null){
rs.close();
if(stmt!=null){
stmt.close();
}
if(conn!=null){
conn.close();
}
}
}
catch (SQLException ex1) {
}
}
}
}
}
注意,這里的proc.getString(2)中的數(shù)值2并非任意的,而是和存儲(chǔ)過程中的out列對(duì)應(yīng)的,如果out是在第一個(gè)位置,那就是proc.getString(1),如果是第三個(gè)位置,就是proc.getString(3),當(dāng)然也可以同時(shí)有多個(gè)返回值,那就是再多加幾個(gè)out參數(shù)了。
三:返回列表
由于oracle存儲(chǔ)過程沒有返回值,它的所有返回值都是通過out參數(shù)來替代的,列表同樣也不例外,但由于是集合,所以不能用一般的參數(shù),必須要用pagkage了.所以要分兩部分,
1, 建一個(gè)程序包。如下:
CREATE OR REPLACE PACKAGE TESTPACKAGE AS
TYPE Test_CURSOR IS REF CURSOR;
end TESTPACKAGE;
2,建立存儲(chǔ)過程,存儲(chǔ)過程為:
CREATE OR REPLACE PROCEDURE TESTC(p_CURSOR out TESTPACKAGE.Test_CURSOR) IS
BEGIN
OPEN p_CURSOR FOR SELECT * FROM HYQ.TESTTB;
END TESTC;
可以看到,它是把游標(biāo)(可以理解為一個(gè)指針),作為一個(gè)out 參數(shù)來返回值的。
在java里調(diào)用時(shí)就用下面的代碼:
package com.hyq.src;
import java.sql.*;
import java.io.OutputStream;
import java.io.Writer;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import oracle.jdbc.driver.*;
public class TestProcedureTHREE {
public TestProcedureTHREE() {
}
public static void main(String[] args ){
String driver = "oracle.jdbc.driver.OracleDriver";
String strUrl = "jdbc:oracle:thin:@127.0.0.1:1521:crm";
Statement stmt = null;
ResultSet rs = null;
Connection conn = null;
try {
Class.forName(driver);
conn = DriverManager.getConnection(strUrl, "crm", "crm");
CallableStatement proc = null;
proc = conn.prepareCall("{ call hyq.testc(?) }");
proc.registerOutParameter(1,oracle.jdbc.OracleTypes.CURSOR);
proc.execute();
rs = (ResultSet)proc.getObject(1);
while(rs.next())
{
System.out.println("<tr><td>" + rs.getString(1) + "</td><td>"+rs.getString(2)+"</td></tr>");
}
}
catch (SQLException ex2) {
ex2.printStackTrace();
}
catch (Exception ex2) {
ex2.printStackTrace();
}
finally{
try {
if(rs != null){
rs.close();
if(stmt!=null){
stmt.close();
}
if(conn!=null){
conn.close();
}
}
}
catch (SQLException ex1) {
}
}
}
}
在這里要注意,在執(zhí)行前一定要先把oracle的驅(qū)動(dòng)包放到class路徑里,否則會(huì)報(bào)錯(cuò)的。
補(bǔ)充一個(gè)使用oracle存儲(chǔ)過程分頁的小例子:
1, 建一個(gè)程序包。如下:
CREATE OR REPLACE PACKAGE TESTPACKAGE AS
TYPE Test_CURSOR IS REF CURSOR;
end TESTPACKAGE;
2,建立存儲(chǔ)過程,存儲(chǔ)過程為:
create or replace procedure TESTC(p_CURSOR out TESTPACKAGE.Test_CURSOR,lowerNum in numeric,higherNum in numeric) is
begin
OPEN p_CURSOR FOR select * from ( select row_.*, rownum rownum_ from (select id,title,status from HYQTEST) row_ where rownum <= higherNum) where rownum_ >lowerNum;
end TESTC;
使用plsql測試:
declare
lowerNum integer;
higherNum integer;
id varchar2(10);
title varchar2(500);
status numeric;
c testpackage.Test_CURSOR;
rownum_ integer;
begin
lowerNum:=1;
higherNum:=10;
TESTC(c,lowerNum,higherNum);
LOOP
FETCH c INTO id,title,status,rownum_;
EXIT WHEN c%NOTFOUND;
DBMS_OUTPUT.PUT_LINE('=行號(hào)='||rownum_||'=='||id||'==='||title||'===='||status||'==');
END LOOP;
CLOSE c;
end;
聯(lián)系客服